Same material and lighting but different look


I’ve got a strange problem… I have two static meshes with exactly the same material, with the same light, and same everything else… But they render really differently. 's a picture :

The only difference is that the floor mesh is converted from a BSP whereas the walls and the ceilling are FirstPersonBP’s Cube Mesh. I put a lot of identical parameters, as you can see :

(Also their lightmap resolution is 64 for both).

Could you help me to find a solution ?

Thanks in advance.

PS: Sorry if my english is bad, I’m actually French!

As I recall, the BSP has a weird light collection.

Yeah, i wouldn’t trust the bsp conversion. Try an putting a cube from the modes window and see if it looks the same. This might be an issue with bsp conversion not generating good normals.